Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Jun 22;10:10052. doi: 10.1038/s41598-020-66903-z

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Maximal actomyosin Mg-ATPase activity increased with age in hearts from females but not males. (A) Actomyosin Mg-ATPase activity increased as calcium concentrations increased to the same extent in myofilaments from middle-aged and older male hearts. (B) In females, actomyosin Mg-ATPase activity increased with age at almost all calcium concentrations tested. Values represent the mean ± SEM values. Data were analyzed with a two-way repeated measures ANOVA, with age as the main factor, calcium concentration as the repeated measure and pairwise multiple post-hoc comparisons with a Tukey test. The * symbol indicates a significant effect of age. Values were significant for p < 0.05. Samples were hearts from 5 middle-aged male mice, 6 older males, 5 middle-aged females and 5 older females, respectively.